Air conditioners and their fault detection methods, devices, and computer-readable storage media

Abstract

This application provides an air conditioner and a fault detection method, apparatus, and computer-readable storage medium thereof. The fault detection method includes: determining whether the amplitude of the compressor along a preset direction exceeds an amplitude threshold; in response to determining that the amplitude of the compressor along the preset direction exceeds the amplitude threshold, determining whether the phase current of the compressor meets a preset change condition and whether the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than a fluctuation amplitude threshold; in response to determining that the phase current of the compressor meets the preset change condition and the maximum fluctuation amplitude of the exhaust pipe temperature within the first preset time period is less than the fluctuation amplitude threshold, determining that the exhaust pipe has ruptured; in response to determining that the phase current of the compressor does not meet the preset change condition or the maximum fluctuation amplitude of the exhaust pipe temperature within the first preset time period is greater than or equal to the fluctuation amplitude threshold, determining that the compressor has malfunctioned.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, specifically to an air conditioner and its fault detection method, device, and computer-readable storage medium. Background Technology

[0002] In related technologies, when a compressor malfunctions, the type of malfunction cannot be accurately determined, which makes it impossible for maintenance personnel to accurately handle the malfunction and increases the maintenance workload of the maintenance personnel. Summary of the Invention

[0003] This application provides an air conditioner and its fault detection method, device, and computer-readable storage medium, which can accurately determine the fault type of the compressor, thereby guiding maintenance personnel to accurately handle the compressor fault, reducing the maintenance workload and improving the convenience of maintenance operations.

[0004] In a first aspect, embodiments of this application provide an air conditioner fault detection method. The air conditioner includes a compressor, an exhaust pipe, and an exhaust temperature sensor. The exhaust pipe is connected to the exhaust port of the compressor. The air conditioner fault detection method includes: determining whether the amplitude of the compressor exceeds an amplitude threshold; in response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor meets a preset change condition and whether the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than a fluctuation amplitude threshold; in response to determining that the phase current of the compressor meets the preset change condition and the maximum fluctuation amplitude of the exhaust pipe temperature within the first preset time period is less than the fluctuation amplitude threshold, determining that the exhaust pipe has ruptured; in response to determining that the phase current of the compressor does not meet the preset change condition or the maximum fluctuation amplitude of the exhaust pipe temperature within the first preset time period is greater than or equal to the fluctuation amplitude threshold, determining that the compressor has malfunctioned.

[0005] In some embodiments, determining whether the phase current of the compressor meets a preset change condition includes: determining whether the phase current of the compressor is less than a current threshold within a second preset time period; and determining that the phase current of the compressor meets the preset change condition in response to determining that the phase current of the compressor is less than the current threshold within a second preset time period.

[0006] In some embodiments, determining whether the phase current of the compressor meets a preset change condition includes: in response to determining that the phase current of the compressor is greater than or equal to a current threshold at at least one moment within a second preset time period, determining whether the change trend of the phase current of the compressor within the second preset time period is gradually decreasing; in response to determining that the change trend of the phase current of the compressor within the second preset time period is gradually decreasing, determining that the phase current of the compressor meets the preset change condition; and in response to determining that the change trend of the phase current of the compressor within the second preset time period is not gradually decreasing, determining that the phase current of the compressor does not meet the preset change condition.

[0007] In some embodiments, the compressor has multiple preset directions; determining whether the amplitude of the compressor exceeds an amplitude threshold includes: determining whether the amplitude of the compressor along the multiple preset directions all exceed the amplitude threshold, and whether the duration for which the amplitude of the compressor along the multiple preset directions exceeds the amplitude threshold all exceed a time threshold; in response to determining that the amplitude of the compressor along the multiple preset directions all exceed the amplitude threshold, and the duration for which the amplitude of the compressor along the multiple preset directions exceeds the amplitude threshold all exceed a time threshold, determining that the amplitude of the compressor exceeds the amplitude threshold.

[0008] In some embodiments, the air conditioner includes a gyroscope configured to measure the offset angle of a preset axis on the compressor, the preset axis extending along a preset direction; before determining whether the amplitude of the compressor exceeds an amplitude threshold, the air conditioner fault detection method includes: acquiring the angle of the preset axis at the current moment and the angle at the previous moment; in response to determining that the angle of the preset axis at the current moment and the angle at the previous moment are both within a first angle partition or both within a second angle partition, using the difference between the angle of the preset axis at the current moment and the angle at the previous moment as the offset angle of the preset axis; in response to determining that the angle of the preset axis at the current moment is within the first angle partition and the angle of the preset axis at the previous moment is within the second angle partition, determining the offset angle of the preset axis according to the following formula: Δε=(180°+α) i )+(180°-α i-1 In response to determining that the angle of the preset axis at the current moment is within the second angle partition and the angle of the preset axis at the previous moment is within the first angle partition, the offset angle of the preset axis is determined according to the following formula: Δε=(180°+α) i-1 )+(180°-α i ); where Δε is the offset angle of the preset axis, α i-1 Let α be the angle of the preset axis at the previous moment. iLet i be the angle of the preset axis at the current moment, where i is a positive integer and greater than or equal to 2; the first angle partition is 0° to 180°, and the second angle partition is -180° to 0°.

[0009] Secondly, embodiments of this application provide an air conditioner fault detection device, comprising: an amplitude comparison circuit configured to determine whether the amplitude of the compressor exceeds an amplitude threshold; and a fault determination circuit configured to perform the following fault determination operations: in response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor gradually decreases and whether the measured value of the exhaust temperature sensor within a preset time period is lower than a temperature threshold; in response to determining that the phase current of the compressor gradually decreases and the measured value of the exhaust temperature sensor within a preset time period is lower than the temperature threshold, determining that the exhaust pipe is damaged or loose; and in response to determining that the phase current of the compressor does not gradually decrease or the measured value of the exhaust temperature sensor within a preset time period is not lower than the temperature threshold, determining that the compressor has malfunctioned.

[0010] Thirdly, this application provides an air conditioner, including: a compressor, an exhaust pipe and an exhaust temperature sensor, wherein the exhaust pipe is connected to the exhaust port of the compressor and the exhaust temperature sensor is disposed on the exhaust pipe; a memory storing a computer program; and a processor, wherein the computer program, when executed by the processor, implements the air conditioner fault detection method as described in any of the above embodiments.

[0011] In some embodiments, the air conditioner includes a six-axis sensor, which includes a three-axis gyroscope and a three-axis accelerometer.

[0012] In some embodiments, the compressor has a latching part at its bottom, and the six-axis sensor is latched in the latching part.

[0013] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the air conditioner fault detection method described above.

[0014] The air conditioner fault detection method provided in this application first determines whether the amplitude of the compressor along a preset direction exceeds the amplitude threshold. If the amplitude of the compressor along the preset direction exceeds the amplitude threshold, it further determines whether the phase current of the compressor meets the preset change conditions and whether the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than the fluctuation amplitude threshold. This allows for accurate identification of the actual cause of the abnormal vibration of the compressor, such as determining the fault cause as a specific type like exhaust pipe rupture or compressor failure. This guides maintenance personnel to accurately handle the compressor fault, reducing the maintenance workload and improving the convenience of maintenance operations. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart of an air conditioner fault detection method provided in some embodiments of this application;

[0017] Figure 2 This is a partial flowchart of an air conditioner fault detection method provided in some embodiments of this application;

[0018] Figure 3 This is another partial flowchart of an air conditioner fault detection method provided in some embodiments of this application;

[0019] Figure 4 This is another partial flowchart of an air conditioner fault detection method provided in some embodiments of this application;

[0020] Figure 5 This is a structural diagram of an air conditioner provided in some embodiments of this application.

[0021] Explanation of key component symbols:

[0022] 1-Air conditioner, 10-Processor, 20-Memory. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0026] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0027] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0028] like Figure 1 As shown, in a first aspect, embodiments of this application provide an air conditioner fault detection method, which includes S10 to S40, and can accurately determine the fault type of the compressor, thereby guiding maintenance personnel to accurately handle the compressor fault, reducing the maintenance operation burden and improving the convenience of maintenance operation.

[0029] The air conditioner 1 includes a compressor and an exhaust pipe, with the exhaust pipe connected to the compressor's exhaust port. The type of air conditioner 1 can be determined according to actual needs, and may include, for example, a wall-mounted air conditioner 1, a floor-standing air conditioner 1, or a window air conditioner 1; this embodiment does not limit this type. In some embodiments, the air conditioner 1 may include an exhaust temperature sensor, which is disposed on the exhaust pipe and used to detect the temperature of the exhaust pipe.

[0030] S10: Determine whether the compressor amplitude exceeds the amplitude threshold.

[0031] Here, the compressor amplitude can be determined by measuring a sensor installed on the compressor. In some examples, determining whether the compressor amplitude exceeds an amplitude threshold can be done by determining whether the compressor amplitude along a preset direction exceeds the amplitude threshold. The preset direction can be predetermined based on the actual operating conditions of the compressor, and can be a vibration direction that accurately reflects the abnormal vibration state of the compressor. The number of preset directions can be determined according to actual needs, and can be one or more; this application embodiment does not limit this. The amplitude threshold can be predetermined based on historical operating data and / or experimental test data of the compressor when abnormal vibration occurs, and is pre-stored in the control system of air conditioner 1; when the compressor has multiple preset directions, a corresponding amplitude threshold can be set for each preset direction.

[0032] In some embodiments, the compressor can be mounted on the base plate of the air conditioner 1, and the preset direction can include at least the up-down direction. For example, the preset direction can be the up-down direction, in which case it can be directly determined whether the amplitude of the compressor along the up-down direction exceeds the amplitude threshold; another example is that the preset direction can include the up-down direction and the horizontal direction, and the horizontal direction can include at least one of the left-right direction and the front-back direction, in which case it can be determined whether the amplitude of the compressor along the up-down direction and the horizontal direction exceeds their respective amplitude thresholds.

[0033] S20: In response to determining that the amplitude of the compressor exceeds the amplitude threshold, determine whether the phase current of the compressor meets the preset change conditions and whether the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than the fluctuation amplitude threshold.

[0034] When it is determined that the compressor's amplitude exceeds an amplitude threshold, for example, when the compressor's amplitude along a preset direction exceeds the amplitude threshold, it can be determined that the compressor has experienced abnormal vibration and may have a fault. At this time, it can be further determined whether the compressor's phase current meets preset change conditions and whether the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than the fluctuation amplitude threshold, so as to accurately determine the actual cause of the compressor's abnormal vibration and thus accurately determine the type of compressor fault.

[0035] S30: In response to determining that the phase current of the compressor meets the preset change conditions and that the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than the fluctuation amplitude threshold, it is determined that the exhaust pipe has ruptured.

[0036] Here, based on historical operating data and / or experimental test data, the change in the compressor's phase current when the exhaust pipe ruptures can be determined in advance, and this change can be used as a preset change condition.

[0037] Similarly, based on historical operating data and / or experimental test data, the upper limit of the temperature fluctuation range of the exhaust pipe at the point of rupture can be predetermined, thereby obtaining the temperature fluctuation range threshold of the exhaust pipe. The maximum temperature fluctuation range of the exhaust pipe within a first preset time period can be the difference between the highest and lowest temperatures of the exhaust pipe within the first preset time period. The specific value of the first preset time period can be determined according to actual needs, and this application embodiment does not limit it; for example, the first preset time period can be 4 to 7 minutes, such as 4 minutes, 5 minutes, 6 minutes, or 7 minutes, etc.

[0038] When the compressor's phase current meets preset change conditions and the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than a fluctuation amplitude threshold, it can be determined that the exhaust pipe has ruptured. Exhaust pipe rupture can include situations such as the exhaust pipe breaking into at least two sections, the exhaust pipe having a large crack that causes significant shaking or vibration, etc. This application embodiment does not limit these situations. In this case, maintenance personnel need to replace the exhaust pipe to prevent further abnormal compressor vibration caused by the ruptured exhaust pipe.

[0039] S40: In response to determining that the compressor phase current does not meet the preset change conditions or that the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is greater than or equal to the fluctuation amplitude threshold, the compressor is determined to have malfunctioned.

[0040] When it is determined that the compressor's phase current does not meet the preset change conditions or the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is greater than or equal to the fluctuation amplitude threshold, it can be determined that the exhaust pipe has not ruptured, but rather that the compressor has malfunctioned. Here, compressor malfunction can include aging of the compressor body, loosening or falling off of bolts used to secure the compressor, etc., and this application embodiment does not limit these types of malfunctions. In this case, maintenance personnel need to perform maintenance on the compressor body or tighten the bolts used to secure the compressor to prevent the compressor malfunction from continuing to cause abnormal compressor vibration.

[0041] Compared with related technologies, the air conditioner fault detection method provided in this application first determines whether the amplitude of the compressor along a preset direction exceeds the amplitude threshold. When the amplitude of the compressor along the preset direction exceeds the amplitude threshold, it further determines whether the phase current of the compressor meets the preset change conditions and whether the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than the fluctuation amplitude threshold. This allows for accurate identification of the actual cause of the abnormal vibration of the compressor, such as determining the fault cause as a specific type like exhaust pipe rupture or compressor failure. This guides maintenance personnel to accurately handle the compressor fault, reducing the maintenance workload and improving the convenience of maintenance operations.

[0042] The type of preset changing conditions can be determined according to the actual working conditions, and this application embodiment does not limit this. For example Figure 2 As shown, in some embodiments, "determining whether the phase current of the compressor meets the preset change conditions" in S20 may include S201 to S202.

[0043] S201: Determine whether the phase current of the compressor is less than the current threshold within the second preset time period.

[0044] Here, the current threshold can be preset in the control system of the air conditioner 1 to be used as a judgment condition for whether the phase current of the compressor meets the preset change conditions.

[0045] S202: In response to determining that the phase current of the compressor is less than the current threshold within a second preset time period, determine that the phase current of the compressor meets the preset change condition.

[0046] The specific value of the second preset duration can be determined according to actual needs, and this application embodiment does not limit it. The first preset duration and the second preset duration can be equal or unequal, and this application embodiment does not limit it. For example, the second preset duration can be 4 to 7 minutes, such as 4 minutes, 5 minutes, 6 minutes, or 7 minutes, etc. If it is determined that the phase current of the compressor is less than the current threshold within the second preset duration, it can be determined that the phase current of the compressor meets the preset change condition, and the abnormal vibration of the compressor may be caused by the rupture of the exhaust pipe.

[0047] By setting S201 to S202, it is possible to determine more accurately whether the phase current of the compressor meets the preset change conditions, and then use this as one of the identification conditions to accurately identify the specific fault cause that causes abnormal vibration of the compressor.

[0048] like Figure 3 As shown, in some examples, "determining whether the phase current of the compressor meets the preset change conditions" in S20 may include S203 to S205.

[0049] S203: In response to determining that the phase current of the compressor is greater than or equal to a current threshold at at least one moment within a second preset time period, determine whether the trend of change of the phase current of the compressor within the second preset time period is a gradual decrease.

[0050] If it is determined that the phase current of the compressor is greater than or equal to the current threshold at at least one moment within the second preset time period, that is, the phase current of the compressor is not completely less than the current threshold within the second preset time period, it can be further determined whether the change trend of the phase current of the compressor within the second preset time period is gradually decreasing, so as to further determine whether the phase current of the compressor meets the preset change condition.

[0051] For example, the compressor's phase current changing trend within the second preset time period is gradually decreasing. This can mean that the compressor's phase current continuously decreases within the second preset time period, that is, in any two adjacent moments within the second preset time period, the compressor's phase current at the previous moment is greater than the phase current at the next moment. As another example, the compressor's phase current changing trend within the second preset time period is gradually decreasing. This can mean that the compressor's phase current continuously decreases during a portion of the second preset time period, while remaining constant during the remaining time periods. In other words, the change curve of the compressor's phase current within the second preset time period includes multiple decreasing segments and at least one plateau segment, with the plateau segment located between two adjacent decreasing segments. The compressor's phase current continuously decreases during the decreasing segments and remains constant during the plateau segment.

[0052] S204: In response to the determination that the phase current of the compressor gradually decreases within a second preset time period, the phase current of the compressor is determined to meet the preset change condition.

[0053] If the phase current of the compressor is greater than or equal to the current threshold at at least one moment within the second preset time period, and the phase current of the compressor changes gradually within the second preset time period, it can be determined that the phase current of the compressor meets the preset change condition, and the abnormal vibration of the compressor may be caused by the rupture of the exhaust pipe.

[0054] S205: In response to the determination that the phase current of the compressor does not gradually decrease within a second preset time period, it is determined that the phase current of the compressor does not meet the preset change condition.

[0055] Here, the trend of the compressor's phase current within the second preset time period is not a gradual decrease. It could mean that the compressor's phase current increases continuously for at least a portion of the time period within the second preset time period, or it could mean that the compressor's phase current remains constant throughout the second preset time period. If it is determined that the compressor's phase current is greater than or equal to the current threshold at at least one moment within the second preset time period, but the trend of the compressor's phase current within the second preset time period is not a gradual decrease, it can be determined that the compressor's phase current does not meet the preset change condition, and the abnormal vibration of the compressor is not caused by a rupture in the exhaust pipe.

[0056] By setting S203 to S205, it is possible to determine more accurately whether the phase current of the compressor meets the preset change conditions, and then use this as one of the identification conditions to accurately identify the specific fault cause that causes abnormal vibration of the compressor.

[0057] In some embodiments, the compressor may be provided with multiple preset directions as described above. Figure 4 As shown, S10 may include S11 to S12.

[0058] S11: Determine whether the amplitude of the compressor along multiple preset directions exceeds the amplitude threshold, and whether the duration of the compressor's amplitude exceeding the amplitude threshold along multiple preset directions exceeds the time threshold.

[0059] S12: In response to determining that the amplitude of the compressor exceeds the amplitude threshold in multiple preset directions and that the duration of the amplitude exceeding the amplitude threshold in multiple preset directions exceeds the time threshold, determine that the amplitude of the compressor exceeds the amplitude threshold.

[0060] For example, the multiple preset directions may include the up-down direction and the horizontal direction, and the horizontal direction may include at least one of the left-right direction and the front-back direction. Here, it can be determined whether the amplitude of the compressor along the up-down direction and the horizontal direction both exceed an amplitude threshold, and whether the duration for which the amplitude of the compressor along the up-down direction and the horizontal direction exceeds the amplitude threshold both exceed a time threshold, to determine whether the amplitude of the compressor exceeds the amplitude threshold. If it is determined that the amplitude of the compressor along multiple preset directions all exceeds the amplitude threshold, and the duration for which the amplitude of the compressor along multiple preset directions exceeds the amplitude threshold both exceeds the time threshold, it can be determined that the amplitude of the compressor exceeds the amplitude threshold.

[0061] In some embodiments, the air conditioner 1 may include a gyroscope. The gyroscope is configured to measure the offset angle of a preset axis on the compressor, the preset axis extending along the preset direction. The type of gyroscope can be determined according to actual needs, and this application embodiment does not limit this; for example, the gyroscope may be a three-axis gyroscope. Before S10, the air conditioner fault detection method may include S01 to S05.

[0062] S01: Get the angle of the preset axis at the current moment and the angle at the previous moment.

[0063] S02: In response to determining that the angle of the preset axis at the current moment and the angle at the previous moment are both within the first angle partition or both within the second angle partition, the difference between the angle of the preset axis at the current moment and the angle at the previous moment is used as the offset angle of the preset axis.

[0064] S03: In response to determining that the angle of the preset axis at the current moment is within the first angle partition and the angle of the preset axis at the previous moment is within the second angle partition, the offset angle of the preset axis is determined according to the following formula:

[0065] Δε=(180°+α i )+(180°-α i-1 )

[0066] S04: In response to determining that the angle of the preset axis at the current moment is within the second angle partition and the angle of the preset axis at the previous moment is within the first angle partition, the offset angle of the preset axis is determined according to the following formula:

[0067] Δε=(180°+α i-1 )+(180°-α i )

[0068] Where Δε is the offset angle of the preset axis, and α i-1 α is the angle of the preset axis at the previous moment. i The angle of the preset axis at the current moment is i, where i is a positive integer greater than or equal to 2; the first angle partition is 0° to 180°, and the second angle partition is -180° to 0°.

[0069] Secondly, embodiments of this application provide an air conditioner fault detection device for detecting faults in the aforementioned air conditioner 1. The air conditioner fault detection device includes: an amplitude comparison circuit configured to determine whether the amplitude of the compressor exceeds an amplitude threshold; and a fault determination circuit configured to perform the following fault determination operations: in response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor gradually decreases and whether the measured value of the exhaust temperature sensor within a preset time period is lower than a temperature threshold; in response to determining that the phase current of the compressor gradually decreases and the measured value of the exhaust temperature sensor within a preset time period is lower than the temperature threshold, determining that the exhaust pipe is damaged or loose; and in response to determining that the phase current of the compressor does not gradually decrease or the measured value of the exhaust temperature sensor within a preset time period is not lower than the temperature threshold, determining that the compressor has malfunctioned.

[0070] like Figure 5As shown, in a third aspect, this application provides an air conditioner 1, which includes a compressor, an exhaust pipe, an exhaust temperature sensor, a processor 10, and a memory 20. The exhaust pipe is connected to the exhaust port of the compressor, and the exhaust temperature sensor is disposed on the exhaust pipe. The memory 20 stores a computer program, which, when executed by the processor 10, implements the air conditioner fault detection method provided in any of the above embodiments. The type of air conditioner 1 can be determined according to actual needs, and can be, for example, a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, etc., and this application does not limit this type.

[0071] Processor 10 is connected to memory 20 and can perform various actions and processes according to the program stored in memory 20. Specifically, processor 10 can be an integrated circuit chip with signal processing capabilities. The processor 10 can be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, and can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor, and can be based on x86 architecture or ARM architecture.

[0072] Memory 20 may be volatile or non-volatile, or may include both. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that memory 20 of the methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0073] In some embodiments, the air conditioner may include a six-axis sensor for measuring the amplitude of the compressor along a preset direction. The type of six-axis sensor can be determined according to actual needs, and this application embodiment does not limit this; in some examples, the six-axis sensor may include a three-axis gyroscope and a three-axis accelerometer, which are integrated into the same sensor structure. The six-axis sensor has the advantages of small size and high measurement accuracy, and can measure the acceleration and angular velocity of the compressor along the up / down / left / right / backward directions.

[0074] In some examples, the bottom of the compressor may have a latching part, and a six-axis sensor may be latched onto the latching part.

[0075] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor 10 to execute the steps in the control method of any of the above embodiments.

[0076] For example, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the embodiments of this application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0077] The above provides a detailed description of an air conditioner and its fault detection method, apparatus, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for detecting faults in an air conditioner, characterized in that, The air conditioner includes a compressor, an exhaust pipe, and an exhaust temperature sensor. The exhaust pipe is connected to the exhaust port of the compressor. The air conditioner fault detection method includes: Determine whether the amplitude of the compressor exceeds the amplitude threshold; In response to determining that the amplitude of the compressor exceeds the amplitude threshold, it is determined whether the phase current of the compressor meets the preset change conditions and whether the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than the fluctuation amplitude threshold. In response to determining that the phase current of the compressor meets a preset change condition and that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than the fluctuation amplitude threshold, it is determined that the exhaust pipe has ruptured. In response to determining that the phase current of the compressor does not meet the preset change condition or that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is greater than or equal to the fluctuation amplitude threshold, it is determined that the compressor has malfunctioned. Determining whether the phase current of the compressor meets the preset change conditions includes: Determine whether the phase current of the compressor is less than the current threshold within a second preset time period; In response to determining that the phase current of the compressor is less than the current threshold for a second preset time period, it is determined that the phase current of the compressor meets the preset change condition. Determining whether the phase current of the compressor meets the preset change conditions includes: In response to determining that the phase current of the compressor is greater than or equal to a current threshold at at least one moment within a second preset time period, it is determined whether the trend of the phase current of the compressor within the second preset time period is a gradual decrease; In response to determining that the phase current of the compressor gradually decreases within the second preset time period, it is determined that the phase current of the compressor meets the preset change condition; In response to determining that the phase current of the compressor does not gradually decrease within the second preset time period, it is determined that the phase current of the compressor does not meet the preset change condition.

2. The air conditioner fault detection method according to claim 1, characterized in that, The compressor has multiple preset directions; determining whether the compressor's amplitude exceeds an amplitude threshold includes: Determine whether the amplitude of the compressor along the multiple preset directions exceeds an amplitude threshold, and whether the duration for which the amplitude of the compressor along the multiple preset directions exceeds the amplitude threshold exceeds a time threshold; In response to determining that the amplitude of the compressor along the plurality of preset directions exceeds an amplitude threshold and the duration for which the amplitude of the compressor along the plurality of preset directions exceeds the amplitude threshold exceeds a time threshold, it is determined that the amplitude of the compressor exceeds the amplitude threshold.

3. The air conditioner fault detection method according to claim 1, characterized in that, The air conditioner includes a gyroscope configured to measure the offset angle of a preset axis on the compressor, the preset axis extending in a preset direction; Before determining whether the amplitude of the compressor exceeds the amplitude threshold, the air conditioner fault detection method includes: Obtain the angle of the preset axis at the current moment and the angle at the previous moment; In response to determining that the angle of the preset axis at the current moment and the angle at the previous moment are both within the first angle partition or both within the second angle partition, the difference between the angle of the preset axis at the current moment and the angle at the previous moment is used as the offset angle of the preset axis. In response to determining that the angle of the preset axis at the current moment is within a first angle partition and the angle of the preset axis at the previous moment is within a second angle partition, the offset angle of the preset axis is determined according to the following formula: In response to determining that the angle of the preset axis at the current moment is within the second angle partition and the angle of the preset axis at the previous moment is within the first angle partition, the offset angle of the preset axis is determined according to the following formula: in, The offset angle of the preset axis. The angle of the preset axis at the previous moment. Let i be the angle of the preset axis at the current moment, where i is a positive integer and greater than or equal to 2; the first angle partition is 0°~180°, and the second angle partition is -180°~0°.

4. An air conditioner fault detection device, characterized in that, The air conditioner includes a compressor, an exhaust pipe, and an exhaust temperature sensor. The exhaust pipe is connected to the exhaust port of the compressor. The air conditioner fault detection device includes: An amplitude comparison circuit is configured to determine whether the amplitude of the compressor exceeds an amplitude threshold. The fault determination circuit is configured to perform the following fault determination operations: In response to determining that the amplitude of the compressor exceeds the amplitude threshold, it is determined whether the phase current of the compressor meets the preset change conditions and whether the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than the fluctuation amplitude threshold. In response to determining that the phase current of the compressor meets a preset change condition and that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than the fluctuation amplitude threshold, it is determined that the exhaust pipe has ruptured. In response to determining that the phase current of the compressor does not meet the preset change condition or that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is greater than or equal to the fluctuation amplitude threshold, it is determined that the compressor has malfunctioned. Determining whether the phase current of the compressor meets the preset change conditions includes: Determine whether the phase current of the compressor is less than the current threshold within a second preset time period; In response to determining that the phase current of the compressor is less than the current threshold for a second preset time period, it is determined that the phase current of the compressor meets the preset change condition. Determining whether the phase current of the compressor meets the preset change conditions includes: In response to determining that the phase current of the compressor is greater than or equal to a current threshold at at least one moment within a second preset time period, it is determined whether the trend of the phase current of the compressor within the second preset time period is a gradual decrease; In response to determining that the phase current of the compressor gradually decreases within the second preset time period, it is determined that the phase current of the compressor meets the preset change condition; In response to determining that the phase current of the compressor does not gradually decrease within the second preset time period, it is determined that the phase current of the compressor does not meet the preset change condition.

5. An air conditioner, characterized in that, include: The compressor, the exhaust pipe, and the exhaust temperature sensor are provided, wherein the exhaust pipe is connected to the exhaust port of the compressor, and the exhaust temperature sensor is disposed on the exhaust pipe. Memory, which stores computer programs; A processor, wherein the computer program, when executed by the processor, implements the air conditioner fault detection method as described in any one of claims 1 to 3.

6. The air conditioner according to claim 5, characterized in that, The air conditioner includes a six-axis sensor, which includes a three-axis gyroscope and a three-axis accelerometer.

7. The air conditioner according to claim 6, characterized in that, The compressor has a latching part at its bottom, and the six-axis sensor is latched in the latching part.

8. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps in the air conditioner fault detection method according to any one of claims 1 to 3.

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